[Combined choroidal biopsy and cytology for diagnosis of intraocular tumour]. / Técnica combinada de vitrectomía con biopsia y citología en el diagnóstico de tumor intraocular.

ABSTRACT

CLINICAL CASE No intraocular biopsy technique is free of risk and all have the possibility of giving false negatives due to the difficulty in obtaining a sufficient sample. A modified chorioretinal biopsy was performed on a patient with suspected choroidal melanoma after negative biopsy with 25G vitrectomy. In addition to removing a solid fragment of tumor material using bimanual surgery, material from the lesion was obtained with the vitreotome to perform cytology, which confirmed the diagnosis of melanoma. DISCUSSION: Cytology obtained through the vitreotome in association with removing a solid sample of the choroidal lesion may improve the efficiency of intraocular biopsy.